CentOS8系统配置国内yum源

1，首先进入/etc/yum.repos.d/目录下，新建一个repo_bak目录，用于保存系统中原来的repo文件**

[root@GXY ~]# cd /etc/yum.repos.d/

[root@bogon yum.repos.d]# mkdir repo_bak

[root@bogon yum.repos.d]# mv *.repo repo_bak/

2. 在CentOS中配置阿里的开源镜像

到阿里开源镜像站点下载系统对应版本的repo文件.

[root@GXY yum.rehttppos.d]# wget http://mirrors.aliyun.com/repo/Centos-8.repo

3（可选项）. 配置清华源Centos8

$ vi /etc/yum.repos.d/CentOS-cnnic.repo

#清华源如下配置，这里centosplus-cnnic和PowerTools-cnnic中的enabled根据需求打开； [BaseOS-cnnic] name=CentOS-$releasever-Base-cnnic baseurl=https://mirrors.cnnic.cn/centos/$releasever/BaseOS/$basearch/os/ gpgcheck=1 enabled=1 gpgkey=https://mirrors.cnnic.cn/centos/RPM-GPG-KEY-CentOS-Official

[AppStream-cnnic] name=CentOS-$releasever-AppStream-cnnic baseurl=https://mirrors.cnnic.cn/centos/$releasever/AppStream/$basearch/os/ gpgcheck=1 enabled=1 gpgkey=https://mirrors.cnnic.cn/centos/RPM-GPG-KEY-CentOS-Official

[extras-cnnic] name=CentOS-$releasever-Extras-cnnic baseurl=https://mirrors.cnnic.cn/centos/$releasever/extras/$basearch/os/ gpgcheck=1 enabled=1 gpgkey=https://mirrors.cnnic.cn/centos/RPM-GPG-KEY-CentOS-Official

[centosplus-cnnic] name=CentOS-$releasever-Plus-cnnic baseurl=https://mirrors.cnnic.cn/centos/$releasever/centosplus/$basearch/os/ gpgcheck=1 enabled=0 gpgkey=https://mirrors.cnnic.cn/centos/RPM-GPG-KEY-CentOS-Official

[PowerTools-cnnic] name=CentOS-$releasever-PowerTools-cnnic baseurl=https://mirrors.cnnic.cn/centos/$releasever/PowerTools/$basearch/os/ gpgcheck=1 enabled=0 gpgkey=https://mirrors.cnnic.cn/centos/RPM-GPG-KEY-CentOS-Official

4.清除系统yum缓存，并重新生成新的yum缓存

dnf -y install epel-release

dnf clean all

dnf makecache

dnf repolist

centos 7系统配置yum源

1 进入etc下的yum.repos.d目录下，新建repo_bak目录用于保存repo文件

[root@bGXY ~]# cd /etc/yum.repos.d/

[root@GXY yum.repos.d]# mkdir repo_bak

[root@GXY yum.repos.d]# mv *.repo repo_bak/

2 在cenotos中配置阿里云的开源镜像

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

3（可选项）可选择清华源

4 添加一个 第三方epel的软件源,清除yum缓存，

获得yum软件包

yum -y install epel-release

yum clean all

yum makecache

yum repolist